Registration Dossier
Registration Dossier
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EC number: 952-026-5 | CAS number: -
Long-term toxicity to fish
Administrative data
Link to relevant study record(s)
- Endpoint:
- adult fish: sub(lethal) effects
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
- Reason / purpose for cross-reference:
- data waiving: supporting information
- Reason / purpose for cross-reference:
- data waiving: supporting information
- Reason / purpose for cross-reference:
- data waiving: supporting information
- Reason / purpose for cross-reference:
- data waiving: supporting information
Reference
Description of key information
A long-term toxicity study to rainbow trout has not been carried out on Synthetic Wollastonite or the read-across material Soda-ash flux calcined kieselghur.
According to Annex IX, section 9.1.6, column 2 of Regulation (EC) No. 1907/2006, long term toxicity testing shall be proposed by the registrant if the chemical safety assessment indicates the need to investigate further the effects on aquatic organisms.
A study has not been conducted on Synthetic wollastonite as the substance is considered to have no or very low toxicity based on a number of studies.
Testing was carried out on the read-across material Kieselguhr soda ash flux calcined at 3 trophic levels (algae, daphnia and fish) in reliable OECD guideline studies. In each study the L(E)C50s were greater than the solubility of the substance (ie 100% v/v saturated solution).
Finally, Synthetic wollastonite is poorly soluble in water and consists of amorphous and crystalline silica which naturally occur in water bodies. Long-term toxic effects are not expected and therefore the study is considered to be scientifically unjustified.
Key value for chemical safety assessment
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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